Tool-holder.



No. 735,138. PATENTED AUG. 4, 1903. J. M. NORMAND.

TOOL HOLDER.

APPLICATION FILED 1m. 13. 1902.

H0 MODEL.

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WITNESSES: VENTOR.

bvwwmws A b a 4 TTORNE YJ UNITED STATES Patented August 4, 1903.

PATENT OF ICE.

JOSEPH M. NORMAND, OF SPRINGFIELD, OHIO, ASSIGNOR TO THE UNITED STATESTOOL HOLDER COMPANY, OF SPRINGFIELD, OHIO, A CORPO- RATION OF OHIO.

TOOL-HOLDER.

SPECIFICATION forming part of Letters Patent No. 735,138, dated August4, 1903.

Application filed January 13, 1902. Serial No. 89,621. (No model.)

To ctZZ whom it may concern:

Be it known that I, JOSEPH M. NORMAND, a citizen of the UnitedStates,residing at Springfield, in the county of Clark and State ofOhio,

have invented certain new and useful Improvements in Tool-Holders, ofwhich the following is a specification.

My invention relates to tool-holders, and more especially totool-holders carrying borro ing and turning bars.

The varied forms of turning and boring and the many kinds of materialupon which the work is done not only demand a great variety of tools tomeet the conditions, but

also require a varied and nice adjustment and a rigid holding of thetool to the work.

The object of my invention is to provide a holder carrying a boring andturning bar capable of vertical adjustment, also a secondary bar whichmay be used for boring while the other is employed in turning. I attainthese objects by the constructions and combinations hereinafter morefully described,and set forth in the accompanying drawings, in which-Figure l is a perspective view of a holder embodying my device. Fig. 2is an end view showing the cutter of the boring and turning bar inposition for boring. Fig. 3 is a detail showing groove in barrel. Fig. 4and Fig. 4?

0 show two ways of mounting the cutters; and

Fig. 5 is an end view, partly in section, showing a modification makingthe secondary bar vertically adjustable.

Like parts are represented by similar let- 5 ters of reference in theseveral views.

In the drawings, a is the shank, having the horizontal barrel-head aformed at right angles thereto. The shank is provided on its base withthe projections a and a having 0 the set-screws a and a to accuratelyadjust the holder on the slide-rest of a lathe or other turning orboring machine, and the slot a allows the tool-post to extend throughthe shank to attach the holder to the rest. The

tool-holding slots in slide-rests of lathes and like machines vary inwidth, and it has been necessary to make the projections on thetoolholders the same width as the slot. It follows that in ordering atool-holder the width of the slot must be given; but this is rarelydone, making it necessary in nearly all cases for the manufacturer toinquire for the width of the slot in the slide-rest. This is not only aninconvenience and annoyance, but prevents the completion of thetool-holders in quantitiesa material point in these days of greatcompetition and close prices, where the profit is largely in being ableto manufacture goods in quantities. I overcome these difficulties and amable to complete my toolholders in large quantities to meet the varyingwidth of slots in the slide-rests by giving the projection a a widthindependent of the size of the slots and of less width than the slotsand by providing the projections with set-screws a) (one of which is atthe other end of the projection and not shown) to be tightened againstthe inside Walls of the slot, and thereby tighten the projection in theslot. The set-screws a may be operated by inserting a rod or spindle inthe perforation a of its head, and the tightening of the projection a inthe slot brings the tool in alinement with the axes of the machine. Aprojection a with a set-screw a, may be used as additional means tofurther tighten the shank or body to the slide-rest. The head a, isprovided at its respective ends with the bearings 07 to carry the splitcollars b, which are tightened thereon by the screws b, said bearings ahav- 8o ing the grooves a to permit the passage of the screws 1), andthereby prevent lateral movement of the collars on said bearings.

The collars b are formed with the lateral extensions 12 having bearingstherein to carry the boring and turning bar 0 and the screws 0, togetherwith the screws 1), form the means of rigidly clamping the bar in place.

WVithin the barrel a, and preferably at one side of its axial center andopposite the shank, I form a bearing to carry a secondary cutter d in aline parallel with the bar a, and when both bars are employed the bar 0becomes the turning-bar, as shown in Fig. 1. The cutter-bar cl is fixedin position by a set-screw (not shown) extending through the wall of thebarrel and impinging on said bar.

In Fig. 5 I have shown a modification whereby the bar at is given avertical adjustment. This is accomplished by employing the barre] ewithin the barrel a placing it to one side of the axial center of a toavoid the grooves a as shown in Fig. 3. Vithin the barrel 6, at one sideof its axial center, I place the bar d, and it is clamped in placebyhaving the barrel 0 split at d, so that the setscrews 6 bearing uponit, will clamp the bar. When the barrel (2 is not employed, thesetscrews 6 bear directly on the bar 61 to fix its position.

While I have shown the cutter-bars c and d in Fig. 1 with cuttersfinonly one end of said bars, it is obvious that the other ends may beprovided with cutters, and for convenience in adapting my device forvarious classes of work I may use bars cut off at right angles at oneend, the cutters fbeing held in transverse perforations near said end bythe set-screws f, as shown in' Fig. 4, and the other ends of said barsmay be beveled, the cutters f being held in perforations near to andpreferably at the same angle with the bevel of said ends by theset-screws), as shown in Fig. at. It will be seen that by reversing thebars either cutter may be used as desired, thus making a convenient andready arrangement.

Fig. 2 shows the bar a with its cutterin position for boring, the bar 61being removed, the dotted line as representing the base of the grooves aand the dot-and-dash lines y the cylinder to be bored.

It will be seen that in addition to the iongitudinal and transversemovement of the usual slide-rest I provide for the vertical adjustmentof the cutter. The boring and turning bar 0 being in place and thescrews 1) and c loose, the split collars b can be turned upon theirbearings to adjust the height of the bar and cutter, and when soadjusted the screws Z) and c are tightened to hold the bar rigidly inits adjusted position, and by the use of the modification shown in Fig.5 the height of the bar d and its cutter can be adjusted by turning thebarrel 6, which is tightened in its adjusted position by the setscrews eHaving thus described my invention, I claim 1. The combination with theshank having a head at an angle thereto, with circular bearings on therespective ends of said head, of

a cutter-bar and supports for said bar journaled on each of saidbearings, whereby said supports may be turned on said bearings, andmeans to tighten said supports on said bearings, substantially asspecified.

2. The combination with the shank having a transversely-extending headwith circular bearings on the respective ends of said head, of acutter-bar and supports for said bar j ournaled on each of saidbearings, whereby said supports may be turned on said bearings, means totighten said bar in said supports, and means to tighten said supports intheir adjusted position on said bearings, substantially as specified.

3. The combination with the shank having a transversely-extending headwith circular bearings having grooves thereon, on the respective ends ofsaid head, of a cutter-bar and split collars having extensions adaptedto carry said bar, said collars'being j ournaled on the bearings of saidhead, screws in said collars extending through said grooves to tightensaid collars on the head, and screws in said extension to tighten thebar in said collars, substantially as specified.

at. The combination with the head carrying a cutter-bar, said headhaving circular bearings thereon, of supports carrying anothercutter-bar mounted on said bearings, whereby said last-named bar may beadjustedin its 7 relation to said first-named bar and to the work, meansto tighten said bars in place, and means to tighten said supports intheir adj usted positions, substantially as specified.

5. The combination with the head and a cutter-bar adj ustably mountedtherein, said head having circular bearings thereon, of supportscarrying another cutter-bar mounted on said bearings, whereby said barsmay be adjusted in their relation to each other and to the work, andmeans to tighten said bars in their adjusted positions, substantially asspecified.

6. The combination with the head having a round, split head mountedtherein carryinga cutter-bar at one side of its axis, said first namedhead having circular bearings thereon, of split collars carrying anothercutter-bar mounted on said bearings, whereby said bars may be adjustedin their relation to each other and to the work, and screws in saidcollars and head to tighten said bars in their adjusted positions,substantially as specified.

In testimony whereof I have hereunto set my hand this 28th day ofDecember, A. D. 1901.

JOSEPH M. NORMAND.

Vitnesses:

PERCY NORTON, CHAS. I. WELCH.

ICC

